x = int(input())

if x < 600:
  print(8)
elif x < 800:
  print(7)
elif x < 1000:
  print(6)
elif x < 1200:
  print(5)
elif x < 1400:
  print(4)
elif x < 1600:
  print(3)
elif x < 1800:
  print(2)
else:
  print(1)
         x = int(input()) x int(input()) int input() input if x < 600:
  print(8)
elif x < 800:
  print(7)
elif x < 1000:
  print(6)
elif x < 1200:
  print(5)
elif x < 1400:
  print(4)
elif x < 1600:
  print(3)
elif x < 1800:
  print(2)
else:
  print(1)
         x < 600 x 600 print(8) print 8 elif x < 800:
  print(7) x < 800 x 800 print(7) print 7 elif x < 1000:
  print(6) x < 1000 x 1000 print(6) print 6 elif x < 1200:
  print(5) x < 1200 x 1200 print(5) print 5 elif x < 1400:
  print(4) x < 1400 x 1400 print(4) print 4 elif x < 1600:
  print(3) x < 1600 x 1600 print(3) print 3 elif x < 1800:
  print(2) x < 1800 x 1800 print(2) print 2 print(1) print 1 x = int(input()) int(input()) x
x = int(input())

if x < 600:
  print(8)
elif x < 800:
  print(7)
elif x < 1000:
  print(6)
elif x < 1200:
  print(5)
elif x < 1400:
  print(4)
elif x < 1600:
  print(3)
elif x < 1800:
  print(2)
else:
  print(1)
        
